oracle跟踪sql

连接到:

Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production

With the Partitioning, OLAP and Data Mining options

SQL> set autotrace on;

SQL> select count(*) from dual;

COUNT(*)

----------

1

执行计划

----------------------------------------------------------

Plan hash value: 3910148636

-----------------------------------------------------------------

| Id | Operation | Name | Rows | Cost (%CPU)| Time |

-----------------------------------------------------------------

| 0 | SELECT STATEMENT | | 1 | 2 (0)| 00:00:01 |

| 1 | SORT AGGREGATE | | 1 | | |

| 2 | FAST DUAL | | 1 | 2 (0)| 00:00:01 |

-----------------------------------------------------------------

统计信息

----------------------------------------------------------

0 recursive calls

0 db block gets

0 consistent gets

0 physical reads

0 redo size

408 bytes sent via SQL*Net to client

385 bytes received via SQL*Net from client

2 SQL*Net roundtrips to/from client

0 sorts (memory)

0 sorts (disk)

1 rows processed

SQL>CLEAR SCR